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Katharine Hubbard
Добавлен 27 янв 2016
Designing cloning primers for classical (restriction) cloning
Video use for teaching on module 500709 Cellular Regulation and Biotechnology at the University of Hull
Просмотров: 48 316
Видео
Plasmid design - protein tags
Просмотров 12 тыс.2 года назад
Video used for teaching on module 500709 Cellular Regulation and Biotechnology at the University of Hull
Plasmid Design - Promoters
Просмотров 8 тыс.2 года назад
Video used for teaching on module 500709 Cellular Regulation and Biotechnology at the University of Hull
Plasmid design (bacterial expression vector)
Просмотров 18 тыс.2 года назад
Video used for teaching on module 500709 Cellular Regulation and Biotechnology at the University of Hull
Restriction Cloning
Просмотров 17 тыс.2 года назад
Video used for teaching on module 500709 Cellular Regulation and Biotechnology at the University of Hull
Restriction Enzymes
Просмотров 10 тыс.2 года назад
Video used for teaching on module 500709 Cellular Regulation and Biotechnology at the University of Hull
Preparing Microscopy Images with Scale Bars
Просмотров 9 тыс.2 года назад
Video used for teaching on module 400484 Cells and Organelles
Amplification in Signal Transduction pathways
Просмотров 1,6 тыс.2 года назад
Video used for teaching on module 400484 Cells and Organelles at the University of Hull
Predicting mRNA and protein sequences from a gene sequence
Просмотров 9332 года назад
Video used for teaching on module 400484 Cells and Organelles at the University of Hull
Protein Structure
Просмотров 5772 года назад
Video used for teaching on module 400484 Cells and Organelles at the University of Hull
Genome composition calculations
Просмотров 3232 года назад
Video used for teaching on module 400484 Cells and Organelles at the University of Hull
Amino acids, R groups and Protein Biochemistry
Просмотров 3,3 тыс.2 года назад
Video used for teaching on module 400484 Cells and Organelles at the University of Hull
DNA structure and replication
Просмотров 4512 года назад
Video used for teaching on module 400484 Cells and Organelles at the University of Hull
Cellular building blocks ie biological macromolecules
Просмотров 5322 года назад
Video used for teaching on module 400484 Cells and Organelles at the University of Hull
At home ‘tea’ experiment - hypothesis testing, calibration curve and normalisation of data
Просмотров 2443 года назад
Video used for teaching at the University of Hull
At home experiments - Scoring Germination
Просмотров 833 года назад
At home experiments - Scoring Germination
At home chlorophyll extractions and dilution series
Просмотров 2,9 тыс.3 года назад
At home chlorophyll extractions and dilution series
At home 'tea' experiment - dilution series setup
Просмотров 1 тыс.3 года назад
At home 'tea' experiment - dilution series setup
Mobile Phone Colorimeter Spectrophotometer Setup
Просмотров 12 тыс.3 года назад
Mobile Phone Colorimeter Spectrophotometer Setup
At home plant growth experiment setup
Просмотров 1213 года назад
At home plant growth experiment setup
Secondary Messengers in Cell Signalling
Просмотров 7 тыс.3 года назад
Secondary Messengers in Cell Signalling
Plant biotechnology - Agrobacterium transformation
Просмотров 8 тыс.3 года назад
Plant biotechnology - Agrobacterium transformation
This video is gonna save my live in genetic engineering. Thank you!
that perfect as hell you must get much much mre mybe if you make playlist according to lippincot or harper , will be ammzing
How it g/L equivalent to microgram/mL. Isn't it mg/L?
Thank you so much! Please could I ask how you would estimate an Amax value based on the experimental data?
very good explanation,watched about 5min and then I know this is what I needed. Also saved another 2 or 3 vedios for my paper (pharmacology😢) Many thanks
one in all, everything we must know is here in the video, I appreciate you <3
Great video. Thanks.
Katharine.God bless your mother
Nice
you saved me with this amazing video: clear and complete! <3
Thanks for sharing these videos for free, it's super helpful for Biotechnology section in my National Biology Olympiad!
thank you so much!Your explanation about the stop codon really helps me a lot with my assignment.❤
thanks mam, you save my money and time. God bless you. No one had explain the STOP CODON properly
It is not completely clear how you bring the second image with the scale at the bottom?
How is no one talking about her perfect arrows??? Great video btw
A lovely video ❤ however there's something i don't understand, in nested pcr, a primer amplifies a specific region in a sequence but i don't understand how, since a Primer is supposed to amplify from the binding site to the end no?
Sorry i can't articulate my thoughts well since English isn't my first language, but for example i have a 600 nucléotide sequence and i want to amplify a 200 region inside of it but let's say i have a primer that start at 200 isn't going to amplify everything from 200 to 600?
@zizojaezekeom3565 Good question! Initially, the polymerase will actually continue to amplify all the way until the end of the DNA strand, and you won't find any of our target/limited DNA sequences. However, after the third cycle of PCR, remember that the primer going in the opposite direction will bind to overextended single strands of DNA so that when elongation happens again, now your product is fully restricted/limited to your target sequence. See this video for an explanation and animation: ruclips.net/video/2KoLnIwoZKU/видео.html
Hiya , I’ve a question. Is agrobacterium possibly why some get morgellons leisions ? Or unlikely ? Can this bacteria copy dna of insects? Thanks 🙏
Excellent video. Very, very well explained.
This is exactly good lecture
15:43 Antibiotic resistant- why would you want to lower the plants natural defense & let a mimic run around, Like sneaking your buddy into the strip club (he's good, because he has escorted service 😂)
Because agrobacterium has BSL level 1. Implies it is man made! Only native plants (parent plants are symbiotic to the environment & thus do not contain any evidence of agrobacterium in the soil or roots because it is man made.
8:36 Lies The plant knows it is foriegn. This is observed in vito, because the m f mimic/ replication does not contain the same information the host recognizes this as a deletion. & this is where you get a certain percentage of abnormalities and mutations in your lineages & offspring. It is through the host. Because you just created it's own secretory pathway to allow the impermeable membrane to allow it to secrete the foriegn genomes it was designed to keep out! 🤦♂️ Like giving your loved ones abnormalities and mutations because you didn't know better because someone said it was safe. Do you really believe you're helping to create less dis-ease / disease & illnesses, abnormalities and mutations?
Simplified, straightforward approach, thanks:)
6:55 I've read organisms engulfing others like that is rare but was recently observed and the description was published in the journals _Cell_ and _Science_ .
Rare is ok if it is stable! To the best of my knowledge the evidence suggests that all mitochondria share a common origin, ie it may have happened multiple times in evolution, but only one of those events was stable enough to give rise to endosymbiosis
@katharinehubbard5043 Thank you for the clarification and thank you for providing these videos.
Hi is there wobble in the recognition of the restriction site
Not usually - restriction sites are very specific so any variation in sequence will stop the site being recognised - this can be exploited in genetic engineering as if you want to add/remove a site you only need to modify a small number of base pairs
Thank you very much, a very straightforward explanation. I have a question: what happens if the designed primers have very different Tm between them. Is it possible to design the primers before or after the gene sequence to avoid this and also get better CG percentages? If not, is there another approach to increase the PCR efficiency if the gene sequence only allows to design a non compatible pair of primers?
If your primers have very different Tm this might cause issues with your PCR. Sometimes in cloning this can’t be helped, but sometimes just moving the start position by a few bases, or lengthening one primer can really help if this gives you a more similar CG percentage.
Hey! If I am thinking of transcribing my plasmid into an mRNA, do I use the entire gene of interest? Or do I try to find the mRNA sequence and use the cDNA of that instead to put into my plasmid?
Good question! Slightly depends on what you are trying to do. If you want to eg produce large amounts of the protein in a heterologous system then you probably want the cDNA to make things more predictable , but if you are interested in the regulation mechanisms you might well want the entire gene
Great Video!
I am curious if this really gives consistent results. I had the impression that modern mobile phones do all kinds of non-linear "corrections" attempting to give the most pleasing image, so the absolute R,G,B pixel values are not necessarily directly related to just that one point on the image, but everything else in the image too, and possibly even the recent history of image frames as well, if the phone is attempting to compensate for what it believes is the currently-present ambient lighting?
I think it is important to recognised that the method can only be semi-quantitative. It is quite dependent on local light conditions - I would recommend doing all of your calibration and measurement in the middle of the day in a relatively short period of time. Students who did their experiments during sunset/evening and/or had a gap of a couple of hours or more between measurement found their data to be much less reliable
thank you
I have a problem with your use of two different restriction enzymes to cut the palsmid and gene of interest, won't this affect the joining of sticky ends through hydrogen bonding before they are ligated?
Using the two different enzymes allows for directional cloning. If you cut both ends with the same enzyme the insert has a 50% chance of going in backwards. The sticky ends will still work at each end with two different enzymes as long as the plasmid and insert use the right enzymes, but won’t work if the insert goes backwards as they won’t have the right hydrogen bonds (as you identify) - this gives you more control over your cloning. Hope that helps.
Shukran, asante sana
thank you so much!! brilliant explanation with drawings. you saved my time !! <3 <3 <3
At 3.01 how is the bond broken????
Thank you so much for your clear explanation!
Thank you for your video! It saved me a lot when I started my new experiments using plasmids!
Glad it helped!
How do molecular machines like triple-A ATPases work? It is known that they do work upon the hydrolysis of ATP+H2O to ADP+Pi, but how is this converted into mechanical energy? And how comparable are these -30 kJ mol-1 compared to the constant random noise of the environment these molecular machines are in?
Awesome - this is great thank you Katherine :)
Awesome lecture, thanks for simplifying a complicated subject
hbb147-honey
Can i know the matters which can be measured by it and the matters can't
Great job 👍
Why you speaking so fast😭
Hi, the reverse primer should be 5-CTCGAG or 5-GAGCTC? I am confused now😅
Amazing video, thank you!
what is the purpose of adding additional nucleotides at the end ?
This helped SO MUCH I was going mad over my lecture slides but this was amazing. Thanks a lot
Is epsilon the same as wavelength?
No - wavelength uses the lambda symbol. Epsilon is a measure of how inherently absorbent a particular molecule is at a particular wavelength, so acts as a calibration constant
My assignment has asked me to calculate the concentration of several solutions using beer's law - we calculated their absorbance and I'm assuming L is 1cm - so by converting the equation C = A/EL - but it hasn't given us an epsilom symbol, @@katharinehubbard5043
amazing video! thanks!
You are incredible, you have fantastic teaching skills! I was finally able to understand the entire process, even though I had been doing it for months, reading articles and everything, I was only now able to make the necessary connections.